Jar closure or fastener.



E. WEI-KER & E. H. LONG.

JAR CLOSURE 0R PASTENEB. APPLICATION FILED FBB.19

Patented July 6, 1909.

Witnesses.

UNITED sTArns PATENT onnicn.

ELIAS WELKER, OF CHEEKTOWAGA, AND EMANUEL H. LONG, OF BUFFALO, NEW YORK.

JAR CLOSURE OR FASTENER.

To all whom it may concern:

Be it known that we, ELIAS WELKER and EMANUEL II. LONG, citizens of theUnited States, residing, respectively, at Oheektowaga, county of Erie,State of New York, and Buffalo, county of Erie, State of New York, haveinvented certain new and useful Improvements in Jar Closures orFasteners, of which the following is a specification.

This invention relates to an improved fastener for securing the cover ofa jar or the like in place and the object of the invention is to producea fastener which when in place will exert such pressure upon the coverthat it will be forced against the mouth of the jar and hermeticallyseal the same.

Another object of the invention is to provide means for positivelylocking the fastener to the jar so that all probability of its looseningand permitting the misplacement of the cover is avoided.

Another object of the invention is to so construct the pressure bar andlocking lever that the pressure is equally distributed upon the cover sothat it will contact at all points with the surrounding edge of themouth of the jar.

The invention also relates to certain details of construction all ofwhich will be fully and clearly hereinafter described and claimedreference being had to the accompanying drawings, in which,-

Figure 1 is a side elevation of the improved fastener in place upon ajar, the fastener being shown in locking position. Fig. 2 is ahorizontal section through the improved fastener on line a a, Fig. 1.Fig. 3 is a detached central vertical section through the improvedfastener showing it in unlocked position. Fig. 41 is a detached insideview of one of the gri ping or clamping members. Fig. 5 is a detadliedview of the wedge locking ever.

In referring to the drawings for the details of construction, likenumerals designate like parts.

The improved jar closure or fastener consists of two clamping orgripping members, a pressure bar for exerting ressure upon the cover ofthe jar and a we ge shaped locking lever for exerting force upon thepressure bar iagnd operating the clamping or gripping memers.

In the preferred form of the improved fastener as illustrated in theaccompanying drawings, the pressure bar 1 consists of a Specification ofLetters Patent.

Application filed February 19, 1909.

Patented July 6, 1909.

Serial No. 478,838.

straight plate of metal of suitable width, the ends of which are bent soas to form. eyes 2. This pressure bar has a bottom enlargement 3 locatedat about the middle thereof and ar ranged so that when the fastener isin place upon a j a1- or other receptacle 4 it will contact with thecover 5.

The clamping or gripping members are hinged to the pressure bar 1 bypins 6 which pass through openings in the clamping members and throughthe eyes 2. These clamping members are of angular form, each having avertical portion 7 and a substantially horizontal portion 8 extending atabout right angles to the portion 7. The vertical portions 7 of theclamping members are provided with inwardly extending flanges 9, thelower portions of the inner edges of which are serrated as shown at 10in Figs. 1, 3 and 4, so as to constitute gripping jaws to grip upon thescrew threads 1.1 of the jar. The flanges 9 are extended as shown at 12in Figs. 3 and 4, so as to meet the substantially horizontal portions 8of the clamping members and serve as stiffening or strengthening ribsfor said portions. It will be noted that the horizontal portions 8 ofthe clamping members extend toward each other and are of sufficientlength so that they overlap. They are also provided with longitudinalbeads 13 to stiffen and strengthen them as shown in Figs. 1 and 3.

The clamping members are operated to grip the jar by a lever 14 pivotedto the pressure bar. This lever 14 has an outer curved portion 15 theouter edge of which is bent upwardly at right angles to form a verticalflange 16. The top edge of this flange is in clined as shown in Figs. 1,3 and 5, and said inclined edge is adapted to contact with the bottomsurface of one of the overlapping ends of the horizontal portions 8 ofthe clamping members. The bottom surface of the curved outer portion 15of the lever contacts with the pressure bar 1 at about its middle andabove the enlargement 3. The lever has a vertical portion 17 whichserves as a thumb piece by means of which it can be operated. It willreadily be seen that a movement of the thumb piece toward the fastenerwill turn the lever 14 on its pivot and force the flange 16 between theoverlapping ends of the horizontal portions 8 of the clamping membersand the pressure bar 1. Owing to its inclined upper edge, this flange isin reality a wedge which tends to separate the portions 8 of theclamping members from the pressure bar. This action moves the clampingmembers on their pivot pins 6 so that the inwardly extending flanges 9contact with and grip the screw threaded top portion of the sides of thejar, as shown in Fig. 1. When the clamping members securely grip the jarand are incapable of further movement a downward pressure is exertedupon the pressure bar by the wedge shaped flange, and said pressure barforces the cover 5 of the jar tightly against its seat.

A packing 18 of suitable material may be interposed between the jar andits cover so as to insure a perfect air-tight joint.

The great advantage of this improved fastener resides in its greatstrength, its simplicity and the positiveness of its locking action,there being no reliance on the spring action of various parts to securethe locking effect, but instead a Wedge locking lever is employed whichis positive and sure in its action.

We claim.

1. In a device of the class described, a pressure member adapted topress against the cap or cover of a jar, two angular clamping memberspivoted to the ends of the pres sure member, and a lever pivoted to thepressure member and operatively engaging the clamping members.

2. In a device of the class described, a pressure member adapted topress against the cap or cover of a jar, two angular clamping memberspivoted to the ends of the pressure member and having overlappingportions extending above the pressure member and depending portionsadapted to grip the sides of a jar, and a wedge lever pivoted to thepressure member and located below the lapping portions of the clampingmember.

3. In a device of the class described, a pressure member adapted topress against the cap or cover of a jar, two clamping members pivoted tothe ends of the pressure memher, and adapted to grip the sides of a jar,and a lever for operating both the clamping members and the pressuremember.

ELIAS WELKER. EMANUEL H. LONG.

Witnesses:

L. M. SANGSTER, GEORGE A. NEUBAUER.

